Insulating holder for cooper-hewitt tubes and inert gas tubes generally



l... ORQURKE V'IYNSULATING HOLDER FOR cooPER-HEwITT'TUBEs AND INERTcmsmusms GENERALLY Ma n-eh 28, 1933.

Filed Jung -1, 1931 Patented Mar. 28, 1933 PATENT. QF

LAWRENCE onovnxn, or SAN rn'anoxsc cnmronma INSULATING HOLDERFOR C'OOPERHEWITT TUBES AND INERT GAS TUBES GENERALLY- Application filed ma; 1,marfsefia No. 541,258.

The'present invention relates to improvements in insulating holders forCooper- He'witt'tubes and inert-gastubes, generally.

, The present practice, as is Well-known, is to support the glass-bodyof these tubes near their extremities in metal holders covered byheat-resisting insulating material, the extremities of these holdersbeing bent to form 1 feet fitted to the contour of the body of thereflector and provided with holes adapted to 2 tubes under all weatherconditions.

Any insulating material possessed of high insulating qualities and thenecessary strength and rigidity may be employed in the construction ofmy holders.

With my brackets, or holders, the present 0 practice is departed from,in that the support is removed from the glass tube and transferred tothe metal portions of the electrode and terminal sections. In thesepositions, they are removed to less heated points and relieved of thenecessity of grounding to carry off leakages.

In the accompanying drawing, forming a part of this specification, andin which like j characters of reference refer to similar parts,

throughout Figure 1 is a view. of a reflector member bearing a tube ofthe usual Cooper-Hewitt construction supported by my insulating 1brackets, as carried by said reflector;

Figure 2 is a detail of a bracket adapted for the accommodation andsupport of the metal portions of a pair of electrode-terminal sectionsas borne by the two reduced extensions of a Cooper-Hewitt tube andtherethrough the forward end of this tube.

Figure 3' is an edge view, of the bracket shown in Figure 2, showingthetwo arms, the curved base and the character ofthe'two bearingscarried by'the respective extremities of these arms for the reception ofthe respective electrode-terminal sections;

Figure 4: is a detail of one of the armsof the double-armed bracket,showing a hinged section as borne by an extremity and adapted to'supportthe metal portion of an electrodeterminal section; and

Figure 5 is a' detail of a modified bracket, or holder, showing itscurved base, its body, the'upper portion of this body as provided with'asemi-circular bearing, thehinged sec-' tion as borne by the upper bodyportion, and the means for securing the onetothe other in fixedrelation, when enclosing and support ing the metal section of anelectrode-terminal section.

Referring more particularly to the drawing, the numeral 6 indicates areflector member to which are attached in spaced relation a pair of myinsulating brackets, or holders, 12 and 13, supporting in insulatedrelation a Cooper-Hewitt tube 18.

' The brackets 12 and 13difl5er in their construction. The bracket 12comprises a curved base 12' provided with bolt-openings 11 and 11' andtwo similar supporting arms 7 and 7, each of which is equipped withsemi-circular seats and hinged recessed sections 8 and 8' adapted, whenin closed'relation with the terminal sections'of the arms 7 and 7, toform circular openings 10, as indicated in Figure 4, these beingrespectively provided with bolt-openings 27 and27' for the accommodationof bolts provided with nuts similar to that shown at 9, their purposebeing to retainin locked relation the sections 8 and 8 with theextremities of the arms 7 and 7 'The bracket 13 has also a curved base17 provided with bolt-openings 16 and 16 and a body portion 13 extendingright-singularly from the front edge of said'base and terminating in asemi-circular seat 25 and a section 14 hingedly secured thereto, asindicated at 15, and bearing a semi-circular recess. 25" adapted to-forma complete circle with 25 when brought into normal relation therewith,

the section 14 being also provided with a boltopening 24 adapted toregister with the boltopening 23 borne by the body portion 13', in 5 thewhich position of registration a bolt and nut, similar to 15, serves tohold them in this relation.

The tube, or glass-body, 18, whose insulated support in spaced relationto the reflector member 6 is thus provided for, is, as here illustrated,of the ordinary Cooper-Hewitt type, and comprises a glass-body 18provided with a mercury volatiliz-ing chamber 18, carrying the usualresistance heating element, the two right angularly extending divergentbody extensions thereof 26 and 26, the two electrodeebearing members 21and 21 carried, respectively, by said divergent body extens sions, thewires 20 and 20 leading respective: 29% 1y to said electrode-bearingmembers, and the electrode-bearing member 22, with the wires 19 and 19'leading thereto, the former representing the anode, and the latter thecathode of the electric system.

In the installation. of the tube 18 in insulated relation with thereflector member 6, the-simpler, and preferred, plan is to first boltthe two insulating brackets, or holders, l2.

and 13 to the concave surface of the reflector member 6, by means ofscrew-headed bolts and nuts. After thus securing the insulating brackets12 and 13, the hinged members 8, 8

and 1 4 borne by the respective extremities of these brackets are thrownback, leaving their concavities as open seats to receive the metallicelectrode-bearing members 21, 21 and 22. \Vith the tube 18 thus placedand supported, the hinged members 8, 8' and 14 are returned to closedpositions thereabout and there retained by the insertion of screwheadedbolts, of the character indicated at 15, in Figure 5, into the indicatedbolt-openings and there secured by setting-up the nuts providedtherefor.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States:

1. An insulating bracket comprising a curved base bearing bolt-openings,a body portion extending right-angularly from the front edge of saidbase and ending in a semi circular seat having upon its either side andadjacent thereto a bolt-opening, and a section bearing a semi-circularconcavity haying bolt-openings upon either side thereof and adjacentthereto and adapted to register with the aforementioned bolt-openingsfor the accommodation of retaining bolts, said section being hingedlyconnected to the semi-circular seat section borne by the body portion,one .of said bolts serving as a hinge pint-1e and the other as a lockingmeans.

2. An insulating brackets comprising a curved base bearingbolt-openings, two similar body portions, each of which is formedup froman extremity of said base at an angle of less than 90 thereto, theextremity of each of said body portions terminating in a semicircularseat having upon its either side and adjacent thereto a bolt-opening,and a hinged section bearing a semi-circular concavity havingbolt-openings upon either side thereof and adjacent thereto and adaptedto register with the aforementioned bolt-openings for the accommodationof screw-headed bolts, saidsection being hingedl-y connected to thesemi-circular seat section borne by the body portion, one of said boltsserving as a hinge pintle and the other as a locking means therefor.

In testimony whereof I hereunto affix my signature.

LAWRENCE QROURKE,

